721 results about "Feed pump" patented technology

The invention belongs to the technical field of functional sugar alcohol hydrogenation, and particularly relates to a system and a method for intelligently controlling a reaction kettle in a functional sugar alcohol hydrogenation process. Comprising a temperature sensor TT, a pressure sensor PT, a liquid level sensor LT, a hydrogen concentration sensor TZT and a spectrum sensor, and the sensor networks are arranged on a reaction kettle body, a feeding pipeline, a condenser and a hydrogen recovery device. The device is used for collecting temperature, pressure, liquid level and hydrogen concentration in the reaction kettle and spectral data of an outlet sugar alcohol product in real time. The control execution layer comprises a PLC (Programmable Logic Controller), a dynamic valve controller, temperature control equipment and a stirrer speed regulation module; and the dynamic valve controller is connected to the hydrogen supply pipeline and the feeding pump. The hydrogen flow, the temperature and the stirring speed are adjusted in real time through AI dynamic optimization, the sugar alcohol conversion rate is increased to 5%, and the conversion rate fluctuation range is reduced to + / -0.5%.

The invention belongs to the field of plant extracting solution concentration, and discloses a low-pressure high-power concentration device for a plant extracting solution and a concentration method using the low-pressure high-power concentration device. The device is based on a series reverse osmosis membrane stack and a feeding pump, a fresh water collecting tank, a booster pump, three types of pressure sensors, two types of osmometers, a water inlet pressure control system and a one-way valve are additionally arranged, the three types of pressure sensors are used for detecting the pressure of a feeding header pipe, the pressure of concentrated water and the pressure of a fresh water header pipe respectively, and the two types of osmometers are used for detecting the osmotic pressure of the feeding header pipe and the osmotic pressure of the concentrated water respectively. The water inlet pressure control system adjusts the design pressure of the device and the osmotic pressure of the plant extracting solution by adjusting the frequencies of the booster pump and the feeding pump, so that accurate monitoring of parameters is realized, efficient concentration of the plant extracting solution under low pressure is guaranteed, scaling on the surface of a reverse osmosis membrane is delayed, the service life of a membrane stack is prolonged, and continuous production of membrane concentration and filtration is realized.

The invention belongs to the technical field of thermal power generation control, and particularly discloses an automatic control method for tripping of a high-pressure heater drain pump of a thermal power generating unit, which comprises the following steps: step 1, gradually reducing the coal quantity of the thermal power generating unit according to a preset first rate, and enabling the thermal power generating unit to run in a sliding pressure manner in a steam turbine tracking manner; 2, the real-time coal quantity of the thermal power generating unit is obtained, the total air volume and the primary air pressure are regulated and controlled according to the real-time coal quantity, meanwhile, the locking preset time of boiler core equipment of the thermal power generating unit is regulated and controlled, and the operation number of a coal pulverizing system is regulated and controlled; 3, the feed water flow of a feed pump, the pressure of a condensate pump, main steam parameters of a steam turbine and the final-stage high-pressure heater liquid level are regulated and controlled; and 4, whether the unit load, the feed water flow, the main steam parameters and the final-stage high-pressure heater liquid level meet the control ending conditions or not is judged in real time, and if not, the step 2 to the step 4 are repeated. According to the method, the non-planned shutdown frequency can be remarkably reduced, and the operation reliability and safety of the thermal power generating unit are greatly improved.

The invention discloses a continuous kettle type nitromethane production process, and relates to the technical field of basic chemical raw material synthesis and flow chemical reaction process control, which comprises the following steps: quantitatively and continuously pumping a temperature-regulated sodium nitrite mixed solution into a raw material mixer in a closed-loop automatic control mode through a variable-frequency feeding pump matched with a mass flow meter; synchronously, quantitatively and continuously pumping dimethyl sulfate into the raw material mixer in a closed-loop automatic control manner by matching a feeding pump with a stop valve and a mass flow meter, and uniformly mixing the two raw materials in the raw material mixer according to the stoichiometric molar ratio of the dimethyl sulfate to the sodium nitrite, according to the tandem type segmented design, each reaction kettle can be subjected to customized temperature field control and heat transfer design specially aiming at the special thermodynamic and dynamic requirements of the reaction stage where the reaction kettle is located, the heat transfer efficiency of the whole system is greatly improved, and due to the fact that reaction heat is taken away timely and accurately, the heat transfer efficiency is greatly improved. And a by-product generation path induced by local abnormal high temperature is effectively restrained.

The invention provides a steam turbine generator unit feed pump net positive suction head detection system and method, relates to the technical field of net positive suction detection, and solves the technical problem that net positive suction is difficult to recognize in advance in the prior art. The system specifically comprises a temperature acquisition module used for acquiring the temperature of the deaerator; the judgment and early warning module is used for receiving the flow change rate of the feed pump and triggering alarm when the flow change rate exceeds a flow threshold value; the effective net positive suction head calculation module is used for converting the inlet pressure of the water feeding pump into absolute pressure; temperature correction is conducted on the temperature of the deaerator to obtain the saturation temperature of an inlet of the water feeding pump, the saturation temperature is converted into saturated vapor pressure, and the effective net positive suction head is calculated based on the absolute pressure and the saturated vapor pressure; the necessary net positive suction head obtaining module is used for calling the necessary net positive suction head table and calculating and obtaining the necessary net positive suction head; and the net positive suction head calculation module is used for receiving the effective net positive suction head and the necessary net positive suction head and calculating the net positive suction head. The device is used for detecting the net positive suction head.

The invention belongs to the technical field of heat pump rectification, and particularly relates to a double-effect heat pump rectification system which comprises a first-effect rectification tower feeding pump connected with a preheater, the preheater is connected with a first-effect rectification tower, the first-effect rectification tower is connected with a gas-liquid separator through a screw compressor, and the gas-liquid separator is connected with a tail gas condenser through a second-effect falling film reboiler. The second-effect falling film reboiler is connected with a first-effect reflux discharge pump through a first-effect reflux tank, and the first-effect reflux discharge pump is connected with the preheater; the first-effect rectifying tower is respectively connected with a first-effect falling film reboiler and a first-effect falling film circulating pump; the first-effect rectifying tower is connected with a second-effect rectifying tower through a first-effect tower kettle discharging pump; the first-effect falling film reboiler is connected with a second-effect reflux discharge pump through a second-effect reflux tank; the second-effect falling film reboiler is connected with a second-effect falling film circulating pump and a second-effect rectifying tower, the second-effect falling film reboiler is connected with a second-effect rectifying tower kettle discharging pump through the second-effect rectifying tower, and the second-effect rectifying tower is connected with the first-effect falling film reboiler. According to the invention, double-effect rectification and heat pump rectification are successfully combined, and the cost is low.

The utility model relates to an ammonium phosphate evaporation and concentration system and belongs to the field of chemical engineering. The system comprises a concentrated ammonium phosphate pump, a concentrated ammonium phosphate storage tank, an I-effect evaporation chamber, an I-effect heater, an I-effect circulating pump, an I-effect charging pump, an II-effect evaporation chamber, an II-effect heater, an II-effect circulating pump, an II-effect charging pump, an III-effect evaporation chamber, an III-effect heater and an III-effect circulating pump. By adopting the system and the method, low-pressure saturated live steam is utilized to indirectly heat dilute ammonium phosphate to generate secondary steam and tertiary steam to continuously heat the dilute ammonium phosphate to produce concentrated ammonium phosphate. Compared with a two-effect evaporation concentration process flow which is widely used at present, the three-effect countercurrent evaporation concentration process flow saves energy by 47%. The utility model aims at saving energy, reducing consumption, reducing carbon emission of a production device and protecting the environment.

The invention relates to a modular methanol reforming hydrogen production system, and belongs to the technical field of new energy of methanol reforming hydrogen production. The hydrogen production system comprises a control system, an air inlet module, a methanol supply module, a plurality of methanol reforming hydrogen production modules, a reformed gas main pipeline and a tail gas main pipeline, wherein the methanol reforming hydrogen production module comprises a methanol reformer, a tail gas heat exchanger, a methanol evaporator, a methanol aqueous solution sub-feeding pump, a methanol aqueous solution sub-pipeline, a reformed gas sub-pipeline and a tail gas sub-pipeline; the methanol reformer comprises a vaporizing chamber, an oxidizing chamber and a reforming chamber; an outlet of high-temperature tail gas generated by the oxidizing chamber is connected with the tail gas heat exchanger and the methanol evaporator; and the methanol aqueous solution main storage tank is sequentially connected with the methanol evaporator, the tail gas heat exchanger and the reforming chamber through a methanol aqueous solution feeding pump. The methanol reforming hydrogen production system adopts a modular design, is simple in equipment, high in expansibility, quick to start and adjustable in hydrogen production amount, and realizes instant production and instant use of hydrogen energy and hydrogen.

The utility model discloses a device for continuously producing polyether. The device comprises a mixing kettle, a mixing kettle discharging pump, a receiving tank A, a receiving tank discharging pump A, a PO feeding pump, a static mixer, a pipeline reactor, a reactor discharging pump, an adsorption tower, an adsorption tower discharging pump, a receiving tank B, a receiving tank discharging pump B and a distillation tower, the method comprises the following steps: mixing an alcohol raw material and a catalyst in a mixing kettle, pumping into a receiving tank A for temporary storage, pumping the mixed material in the receiving tank A into a static mixer, mixing with epoxypropane, feeding into a pipeline reactor for reaction, pumping the reaction product in the pipeline reactor into an adsorption tower to remove metal elements introduced by the catalyst, a reaction product in the adsorption tower is pumped into a receiving tank B for temporary storage through an adsorption tower discharging pump, a reaction product in the receiving tank B is pumped into a distillation tower for distillation and purification, and purified polyether is obtained. By adopting the continuous production device, the energy consumption can be reduced, the generation of waste gas, waste residues and waste water is reduced, and the production cost is further reduced.

The invention relates to the technical field of gas-liquid separation and purification, in particular to an energy-saving type self-gravity condensation reflux efficient rectification system and a control method. Comprising a buffer tank, a feeding pump, a feeding and discharging thermal coupling heat exchanger, an efficient rectifying tower, a self-gravity reflux condenser, a tower bottom reboiler and a tower bottom extraction pump, the self-gravity reflux condenser is arranged at the top of the high-efficiency rectifying tower, the feeding and discharging thermal coupling heat exchanger is connected between the buffer tank and a feeding hole of the high-efficiency rectifying tower, a tower bottom outlet of the high-efficiency rectifying tower is connected with the tower bottom reboiler and an inlet of the tower bottom extraction pump, and an outlet of the tower bottom reboiler is connected with a circulating feeding hole of the high-efficiency rectifying tower; the self-gravity reflux condenser is used for condensing the tower top gas phase part into liquid, and the liquid flows back to the efficient rectifying tower through gravity; the feeding and discharging thermal coupling heat exchanger is used for exchanging heat between the raw material output by the buffer tank and a tower bottom product of the efficient rectifying tower; and the tower bottom extraction pump is used for outputting tower bottom products. Resource waste is avoided, and equipment investment and occupied area are reduced.

The invention relates to a continuous preparation method of a supported catalyst and application of the supported catalyst in catalysis of furfural hydrocracking. The method comprises the following steps: adding Cu (NO3) 2.3 H2O, Ce (NO3) 3.6 H2O, Mg (NO3) 2.6 H2O and Al (NO3) 3.9 H2O into deionized water to form a solution A; naOH and Na2CO3 are taken and dissolved in deionized water, and a solution B is formed; then respectively introducing the solution A and the solution B into a feeding pump, then introducing into a membrane dispersion microreactor, and mixing to form a precipitate; and washing, drying, calcining and reducing to obtain the catalyst Cu-Ce / MgO-Al2O3. The catalyst prepared by the invention is used in a reaction for catalyzing furfural hydrocracking to prepare 1, 2-pentanediol, and shows excellent catalytic activity and stability, the conversion rate of furfural is as high as 99%, and the yield of 1, 2-pentanediol reaches 44%.

The utility model belongs to the technical field of feed pump devices, and particularly relates to a novel steam feed pump device which comprises a base, a motor and a pump body, an output shaft of the motor is connected with a flange and is connected with an impeller of the pump body, the top end of the base is vertically connected with a screw, and a protective cover is arranged at the top end of the flange. The protective cover is used for effectively shielding the flange, it is ensured that the flange and a connecting bolt of the flange are not invaded by dust, due to the design, the convenience of dismounting and mounting the flange is remarkably improved during maintenance, the maintenance time is effectively shortened, and then the overall maintenance efficiency of the water feeding pump is improved. In addition, by arranging the cooling fan, the motor and the pump body can be effectively cooled, temperature rise caused by long-time work of the motor and the pump body is prevented, and therefore the service life of the motor and the service life of the pump body are effectively prolonged.

The invention discloses a mechanical sealing device of a boiler feed pump, and aims to solve the problem of performance change caused by long-term high-temperature environment of a mechanical sealing spring in the prior art. The device comprises a ring seal set arranged in a gap between a feed pump end shell and a shaft body, a spring set is arranged on the side edge of the ring seal set, and the end, away from the ring seal set, of the spring set protrudes out of the end shell and makes contact with an end plate arranged on the shaft body in a sleeving mode. The key point is that an air bin is arranged at a gap formed by the spring group and the shaft body, and the air bin is communicated with the outside through a ventilation pipe; and the side edge of the end plate is sleeved with an exhaust fan synchronously rotating with the shaft body. When the water feeding pump works, the exhaust fan rotates, hot air in the space where the spring set is located is pumped out, and meanwhile the air bin sucks cold air from the outside to form continuous airflow circulation, so that the spring set is effectively cooled, the risk that the performance of the spring is reduced due to high temperature is reduced, and the stability and the service life of the mechanical seal are guaranteed.

A feed valve, a tail gas outlet valve and a filter circulating valve are arranged at the top of a stirring tank, the upper side surface of the stirring tank is connected with the upper part of a filter through a filter overflow valve pipeline, and a bottom outlet of the stirring tank is connected with the bottom of the filter after being connected with a feed pump; a filter discharge pipe is divided into two paths, one path is connected with the receiving tank through a discharge valve, and the other path is connected with a filter circulating valve; a discharge pipe of the receiving tank is connected with a finished product storage tank after being connected with a discharge pump; a tail gas pipeline with a tail gas outlet valve at the upper part of the receiving tank is connected with a gas inlet of a spiral plate heat exchanger after being converged with a tail gas pipeline with a stirring tank tail gas outlet valve; the upper gas outlet of the heat exchanger is connected with a gas buffer tank after being connected with an induced draft fan, a cooling water outlet valve is arranged on the upper side, and a cooling water inlet valve is arranged on the lower side; a lower outlet pipeline is connected with a buffer tank bottom valve, then is converged with a discharge pipeline of the heat exchanger and then is connected with a solvent recovery tank, and a discharge valve is arranged at the bottom of the gas buffer tank. The device is pollution-free in production, energy-saving and consumption-reducing.

The invention relates to the field of chemical equipment, in particular to a 1-nitroanthraquinone continuous production process based on a dynamic liquid membrane continuous flow reactor, which comprises a solid feeding device, a homogeneous emulsifier, a quenching kettle, a solid-liquid separator, a centrifugal separator and a dynamic liquid membrane reactor, a sulfuric acid storage tank is divided into two branches through a sulfuric acid feeding pump, one branch is connected to the dynamic liquid membrane reactor, the other branch is connected to the dynamic liquid membrane reactor through a flow self-control valve, the quenching kettle is connected to a solid-liquid separator, the solid-liquid separator is divided into two branches, one branch is connected to an anthraquinone crude product storage tank, the other branch is connected to a centrifugal separator, and the other branch is connected to a gas-liquid separator. The centrifugal separator is divided into two branches, one branch is connected to the acid water storage tank, and the other branch is connected to the dichloroethane storage tank, so that the reaction selectivity of the anthraquinone nitration reaction can be effectively improved, high-viscosity solids are prevented from being blocked, and the conversion rate of raw materials in the continuous reaction of the anthraquinone nitration reaction is improved.

This application discloses an acetaldehyde recovery device and method in the production of 1,3-butanediol, belonging to the field of fine chemicals. The device includes: a feed pump, a preheater, a distillation column, a falling film reboiler, a bottom circulating pump, a bottom cooler, a top primary condenser, a reflux ratio distributor, a top secondary condenser, a top product tank, a top transfer tank, a bottom product tank, a bottom transfer tank, a vacuum condenser, a vacuum pump inlet separator, a high vacuum unit, and a vacuum pump outlet separator. The horizontal condenser is directly installed at the top of the distillation column, giving it advantages such as simple structure, convenient operation, low pipeline loss, and high vacuum. A method for acetaldehyde recovery in the production of 1,3-butanediol using this device is also disclosed. Compared to existing technologies, this invention uses falling film evaporation combined with vacuum deep cooling, which avoids the thermal decomposition of 3-hydroxybutyraldehyde and achieves low-temperature, high-efficiency acetaldehyde recovery. It is suitable for continuous production.

The invention relates to a device for increasing the dry matter content of a flowable medium (S), such as sludge, the apparatus comprises a thickener (1) for thickening the medium (S), a feed pump (2) for feeding the medium (S) to the thickener (1), a discharge pump (3) for discharging the thickened medium (T) from the thickener (1), a discharge hopper (4) at the inlet of the discharge pump (3) or between the thickener (1) and the discharge pump (3), and monitoring means for monitoring the performance of the apparatus, the monitoring device at least comprises a feed flow meter (10) for measuring the feed flow from the feed pump (2) to the thickener (1), the monitoring device further comprises means for measuring the time taken to empty the hopper (4) from the first higher level to the second lower level and / or the time taken to fill the hopper (4) from the second lower level to the first higher level (e.g., the downtime of the discharge pump) during operation of the discharge pump (3), and means (18) for calculating the discharge flow rate of the thickener (1) using the measured time and the discharge volume of the hopper (4).

The utility model belongs to the technical field of propylene conveying, and particularly relates to a propylene composite feeding system. The propylene composite feeding system comprises a propylene spherical tank, the bottom of the propylene spherical tank is provided with a pipeline connected with the bottom of a propylene booster, and the top of the propylene booster is provided with a pipeline for refluxing to the propylene spherical tank; a pipeline connected with a propylene feeding pump set is arranged at the bottom of the propylene spherical tank, the propylene feeding pump set is composed of a feeding pump A and a feeding pump B which are connected in parallel, an outlet pipeline of the feeding pump A and an outlet pipeline of the feeding pump B are connected with a propylene conveying pipeline, and the propylene conveying pipeline is used for conveying liquid propylene to a downstream device. The utility model aims to overcome the defects in the prior art, provides the propylene composite feeding system, and saves steam consumption and improves the running stability of the propylene feeding pump set at different seasonal temperatures by combining the booster with the feeding pump set and assisting different feeding pipelines and valves. And the construction and maintenance cost of the production device propylene buffer tank is saved.

The invention discloses a feed pump energy-saving optimization method and system based on variable frequency speed regulation, and relates to the technical field of industrial process control and energy-saving optimization, and the method comprises the steps: constructing a causal analysis model by extracting residual statistical characteristics, recognizing the main drive type of carbon emission change, quantifying the causal effect, and estimating the life loss in combination with sensitivity; energy consumption and service life target weights are dynamically adjusted according to causal labels, a dual-objective optimization function is constructed, a multi-objective genetic algorithm is adopted to determine control parameters of frequency adjustment, and frequency self-adaptive adjustment is achieved. The offset abnormal driving reason is effectively identified, and the accuracy of energy-saving control and the equipment service life management and control capability are improved.

The utility model relates to the technical field of humic acid production, in particular to an efficient feeding device of an acid-containing reaction kettle. The efficient feeding device of the acid-containing reaction kettle comprises a reaction kettle and a premixing kettle, the premixing kettle is connected with the reaction kettle through a feeding pump, the reaction kettle is connected with an acid liquor recovery tank through a primary filter, the acid liquor recovery tank is connected with a liquor preparation tank through a secondary filter, a flushing scraper is arranged in the reaction kettle, and a feeding port is formed in the premixing kettle. According to the device, the premixing kettle and the reaction kettle are reasonably arranged, and structures such as the acid liquor spraying disc are matched, so that the accumulation of acid mist at the feeding hole can be effectively reduced. The acid liquor spraying disc in the premixing kettle can be used for carrying out primary treatment on materials, so that the materials entering the reaction kettle are more uniform, the generation of acid mist is reduced, the problems of low blanking speed and blockage are solved, and the reaction efficiency is improved.

The present invention relates to a reverse osmosis water treatment system comprising: a second- stage LSRRO (Low Salt Rejection RO membrane process) unit using a regenerated membrane as a reverse osmosis (RO) membrane, said regenerated membrane being obtained by subjecting a damaged membrane or a membrane which has reached the end of its service life to a physical and / or chemical treatment for reuse. The present invention comprises: an intake unit including an inlet line for seawater or organic wastewater equipped with an inlet valve, a raw water storage tank for storing the seawater or organic wastewater as raw water, and a feed pump for pressurizing the raw water at a predetermined flow rate and pressure at predetermined intervals; a pre-treatment unit including an ultrafiltration (UF) membrane or microfiltration (MF) membrane for removing fine particulate organic matter contained in the raw water to reduce the load on a downstream reverse osmosis (RO) membrane; and a first-stage RO (Reverse Osmosis) process unit to separate ionic substances included in the filtered water pre-treated by the UF or MF membrane using a reverse osmosis membrane to produce treated water and to separate the raw water into treated water and concentrated water. According to the present invention, there is an advantage in that an LSRRO system can be provided which concentrates raw water to a high concentration with lower energy consumption than conventional RO systems employing commercial membranes.

A comprehensive utilization system for extracting black rice anthocyanin and separating starch is provided with a screw conveyor, an extraction tank is arranged at an outlet of the screw conveyor, stirring blades are arranged in the extraction tank, a liquid outlet pipe is arranged on one side of the extraction tank and connected with a liquid outlet pump through a valve, and the liquid outlet pump is connected with the extraction tank and a liquid storage tank through pipelines. A slag outlet in the bottom of the extraction tank is connected with a screw pump through a pipeline and a valve, an outlet of the screw pump is provided with a pulping machine, an outlet of the pulping machine is provided with a vibrating screen, a filtrate outlet of the vibrating screen is provided with a filtrate collecting tank, the filtrate collecting tank is connected with a horizontal screw centrifuge through a horizontal screw feeding pump, and a slag outlet of the horizontal screw centrifuge is provided with a horizontal screw slag collecting tank; according to the utility model, the extraction of black rice anthocyanin is realized through the extraction tank, starch in black rice is separated and collected by the horizontal screw centrifuge, compared with natural sedimentation, the occupied area is small, the treatment capacity is large, the efficiency is high, the obtained starch has low water content and high quality, and the extraction of black rice anthocyanin and the recycling of starch are realized.

The utility model discloses an evaporation and concentration system suitable for lithium sulfate purification, which is characterized in that an outlet of a raw material tank is sequentially connected with a cold side of a condensate water preheater and a cold side of a non-condensable steam preheater through an outlet of a feeding pump, and then is connected with a tube pass inlet of a heater together with an outlet pipeline of a material circulating pump; a tube pass outlet of the heater is connected with a material inlet of the integrated separator, and a material outlet of the separator is connected with an inlet of the material circulating pump; a secondary steam outlet of the integrated separator is connected with an inlet of a steam compressor through a scrubber tower, and a compressed steam pipe is connected with a shell pass steam inlet of a heater; a shell pass condensed water outlet of the heater is connected with an inlet of a condensed water tank; an outlet of the condensed water tank is connected with a hot side of the condensed water preheater through a condensed water pump; a shell pass extraction opening of the heater is connected with the hot side of the non-condensable steam preheater through a non-condensable gas conveying pipe, and a hot side outlet of the condenser is connected with a vacuumizing system. The system is high in evaporation efficiency and low in operation cost and equipment investment.

The invention relates to an advanced oxidation and sulfur circulation coupled wastewater treatment system and method with wastewater advanced treatment, the advanced oxidation system comprises a first feeding pump, a first UASB reactor and a first feeding device, the first feeding pump is used for conveying to-be-treated wastewater to the first UASB reactor, and the first feeding device is used for conveying the to-be-treated wastewater to the second UASB reactor; the first feeding device is used for adding an advanced oxidation reactant into the first UASB reactor so as to carry out advanced oxidation reaction in the first UASB reactor; the sulfur circulation biological denitrification system comprises a second feeding pump, a second UASB reactor, a dissolving water tank and a second feeding device, the second feeding device is used for adding reaction materials into the dissolving water tank, and the second feeding pump is used for conveying treated wastewater from the dissolving water tank to the second UASB reactor; the treated wastewater and the reaction bacteria in the second UASB reactor are subjected to a sulfur cycle biological denitrification reaction; the efficient and economical treatment on the wastewater containing pollutants such as complex-state metals and nitrogen oxides is realized.

The application belongs to the technical field of salt solution drying, and particularly relates to a continuous evaporation and drying device for triflic acid salt solution. The device comprises a raw material tank, a feeding pump, a recovery cold trap, a vacuum pump, a cyclone separator, two-stage thin film evaporators, a screw conveyor, a material bin and a heat conducting oil furnace, and a continuous material flow path, a gas phase condensation recovery path and a circulating heating path are formed through pipelines. The scheme limits the operation parameters of the two-stage evaporators, such as the operating pressure, temperature and scraper rotating speed, and clearly defines the heat exchange feeding design of the recovery cold trap, the gas velocity of the cyclone separator and the powder backflow structure, is suitable for multiple solvent systems and various corrosion-resistant materials, and the material bin adopts a closed structure with nitrogen protection, and multiple bins can be connected in parallel to switch feeding. The application realizes continuous drying of triflic acid salt, improves production efficiency, product quality and yield, reduces energy consumption and improves solvent recovery rate through waste heat recovery.

The utility model relates to the technical field of boiler feed pump disassembling and assembling tools, in particular to a boiler feed pump main bolt disassembling and assembling tool which comprises a pump body, a plurality of sets of rod penetrating screws used for improving strength are connected to the periphery of the pump body in an inserted mode, and nut bodies used for fastening are installed on the surfaces of the outer side ends of the rod penetrating screws in a screwed mode. A sleeve used for rotating is installed on the periphery of the nut body in a matched mode, and a plurality of sets of magnetic attraction blocks magnetically connected with the nut body are assembled in the sleeve. When the water feeding pump for the boiler is maintained, the sleeve can be taken, the hole in the inner circumference of the sleeve can be conveniently matched and matched with the nut body for limiting one end of the screw penetrating through the periphery of the pump body, the hexagonal ring on the periphery of the sleeve can be conveniently matched with the wrench, and meanwhile the straight hole in the periphery of the sleeve can be conveniently connected with the corresponding long rod in an inserted mode. Therefore, the bar-penetrating screw rod is more convenient to disassemble and assemble, and is not limited to one disassembly and assembly mode.

This utility model discloses an energy-saving device for nitric acid recovery, including a demineralized water preheater. The outlet of the demineralized water preheater is connected to the inlet of a second demineralized water heater, and the outlet of the second demineralized water heater is connected to the inlet of a nitrogen oxide cooler. It also includes a nitrogen oxide compressor, the outlet of which is connected to the inlet of a first demineralized water heater, and the outlet of the first demineralized water heater is connected to the inlet of a rapid cooler. Furthermore, it includes a demineralized water boiler feed pump, the outlet of which is also connected to the inlet of the first demineralized water heater, the outlet of the first demineralized water heater, and the outlet of the second demineralized water heater, which is also connected to the inlet of the demineralized water preheater. Compared to existing technologies, this utility model adds two demineralized water heaters, recovering heat from nitrogen oxides through demineralized water, reducing the amount of circulating water used, and simultaneously reducing the amount of steam used in the steam drum.

The utility model relates to the technical field of refuse landfill monitoring wells, in particular to sludge separation equipment of a monitoring well, which comprises a base, a sludge suction mechanism is arranged above the base and comprises a mounting plate, the left end of the mounting plate is fixedly connected with the outer wall of a shell through bolts, and the top of the mounting plate is fixedly connected with a feeding pump through bolts. A discharging port of the feeding pump is connected with a discharging pipe, a feeding port of the feeding pump is connected with a feeding pipe, one end of the feeding pipe penetrates through the bottom of the mounting plate and is connected with a telescopic pipe, and the bottom of the mounting plate is fixedly connected with an adjusting air cylinder through bolts. According to the sludge separation equipment for the monitoring well, sewage with sludge in the monitoring well can be sucked out by arranging the sludge suction mechanism, sludge can be deposited at the bottom of the sewage by arranging the sludge barrel, and a user can conveniently separate the sludge from water.

The utility model discloses a skid-mounted ammonia nitrogen wastewater treatment system which comprises a feed pump, a preheater, a kettle liquid pump, an ammonia still, an ammonia water storage tank and an ammonia water pump, the input end of the feed pump is connected with a feed port, the output end of the feed pump is connected with a cold end inlet of the preheater through a pipeline, and a cold end outlet of the preheater is connected with the middle of the ammonia still through a pipeline. A kettle outlet of the ammonia still is connected with a kettle liquid pump through a pipeline, an outlet of the kettle liquid pump is connected with a hot end inlet of a preheater, a hot end outlet of the preheater is connected with a waste liquid discharge port, a middle liquid outlet of the ammonia still is connected with a top liquid inlet of an ammonia water storage tank, and a bottom liquid outlet of the ammonia water storage tank is connected with an ammonia water pump through a pipeline. The system provided by the utility model is arranged on the skid-mounted platform to play a role of convenience in installation, is compact in structural arrangement, short in construction period, flexible in installation and convenient to install, move and transport, preheats raw material liquid by utilizing redundant heat of ammonia distillation kettle liquid, and improves the heat utilization efficiency, so that the efficiency of the device is improved, and the operation energy consumption of the equipment is reduced.

In order to make the two pump units which are generally present in an emptying device for a storage container and which feed in alternating fashion as compact as possible on the one hand and subject to as little wear as possible on the other hand, both pump units are preferably equipped with a feed pump in the form of a diaphragm pump, which is driven by a hydraulically operated working cylinder unit.